<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>noscript</title>
</head>
<body>

<p id="demo"></p>

<script>
  document.getElementById("demo").innerHTML = "Hello JavaScript!";
</script>

<noscript>抱歉，您的浏览器不支持JavaScript！</noscript>

<p>不支持 JavaScript 的浏览器将显示 noscript 元素内的文本。</p>

</body>
</html>